Process of preparing high molecular weight esterified cellulose ethers

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专利权人:

ダウ グローバル テクノロジーズ エルエルシー

发明人:

オリヴァー・ピーターマン,マインオルフ・ブラックハーゲン

申请号：

JP2017558713

公开号：

JP6737810B2

申请日:

2016.05.10

申请国别(地区):

JP

年份:

2020

代理人:

摘要：

Increased weight average molecular weight esterified cellulose ether is produced in a process for reacting cellulose ether with aliphatic monocarboxylic anhydride and dicarboxylic anhydride, the process comprising: a) cellulose ether, dicarboxylic anhydride And b) heating the reaction mixture to a temperature between 60 ° C. and 110 ° C. before, during or after mixing the components of the reaction mixture； Adding the acid anhydride to the reaction mixture of step a) in succession or at least in three portions to complete the reaction. [Selection figure] None

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